General Settings

The first tab of the configuration dialog contains General Settings. It is divided into a few groups:

../../_images/lavuegeneralconfig.png

Image source

  • Refresh time in s: select a minimal time between consecutive frames

  • Auto enlarge refresh time automatically changes the refresh time if it is too small

  • Number of image sources: a number of different image sources from which images should be stitched

  • Map images to color channels: places images form different image sources to separate color channels

  • Interrupt on source errors: stops live image viewing on image source errors

  • Display specific for a source: store/retrieve display parameters for an each image source separately

  • Source timeout in ms: maximal time in milliseconds to wait for a response , e.g. from Hidra or HTTP image sources

Statistics and 1d plots

  • Intensity scaling: applies the intensity display scaling to image statistics and 1d-plots

  • Calculate variance: perform calculations of variance from image pixel intensities

ZMQ security stream

  • Enabled: turns on sending the ZMQ security stream with basic information about the image, e.g. maximal intensity

  • Automatic port: selects a port number for the ZMQ security stream automatically

  • Port: defines a port number for the ZMQ security stream

Image display

  • Maximal memory buffer size: maximal frame number in the memory buffer

  • Mask pixels with NAN: stores masked pixels as a float Not-A-Number (NAN)

  • Max value added to negative mask: add maximal type value of current image to the negative high value mask

  • Pixel masks with zero values: causes that zero pixel values of mask image are interpreted as masking

  • Intensity overflow color: causes that pixels with intesity over the overflow value are ploted in the color

  • Keep original coordinates: causes the 2D-plot axes transforms with image transformation

  • Lazy image slider: plot a new image after the image slider is focused out

  • Aspect Ratio locked: sets the aspect ratio to 1:1 in the 2D-plot

  • Auto Down-Sample: turns on auto-down-sampling mode of pyqtgraph

  • Float type for intensity: type to which intensity is converted if it is changed to float type

  • Accelerate memory buffer sum: speeds up calculation of an image sum for the memory buffer tool

  • Image channels with gradient colors: use gradient color maps to display pixel intensities in the RGB-channel mode

  • Ranges and ROIs Colors: allows to defined colors of Ranges or ROIs selection frames. Colors are used cyclically

ROIs

  • Show all ROIs values: calculates ROIs sum values for all ROI frames

  • Send ROIs values: sends ROIs sum values to LaVueController tango server

  • Single ROIs aliases: adds rois1, roi2, roi3, … aliases if a number of rois is higher than their aliases

  • Label ROIs with aliases: displays ROIs aliases on the 2D image

Tools

  • Store detector geometry for Angle/Q: store the detector geometry for the Angle/Q tool in the configuration settings

  • Geometry form a source: fetch metadata parameters describing detector geometry from the image source

  • Display extension refresh time in s: Minimum refresh time for display extensions

  • Parameter polling interval in s: time in seconds between read-outs of detector tango attributes in the Parameters tool

  • Crosshair locker switched on: initial status of intensity crosshair locker

  • Diffractogram size: number of points in the diffractogram

  • Correct Solid Angle: correct solid angle flag for diffractogram

  • Send results to LavueController: sends the current tool results to LaVueController tango server

Sardana

  • Enabled: turns on communication with Sardana

  • Door: Door tango device to communicate with Sardana

  • Add ROIs to MG: causes the ROIs Apply button adds the corresponding ROIs aliases into the current Sardana Measurement Group

  • Fetch ROIs order: read a ROIs order from Sardana environment variables